1. “The possibilities of group intelligence,” writes James Surowiecki in The Wisdom of Crowds, “at least when it came to judging questions of fact, were demonstrated by a host of experiments conducted by American sociologists and psychologists between 1920 and the mid-1950s….” He goes on to cite academic and military trials, in which teams, more accurately than individuals, estimated room temperature, the weight of objects, and, most famously, the number …